Retoucher&#39;s rotary pencil



E. A. GLASSBURN.

RETOUCHER'S ROTARY PENCIL- APPUCATION man on. 2;. 191B. msutww 05c. 22. I920.

Patenwd Feb. 8, 1921.

m M m N 11 ATTORNEYS.

UNITED STATES ELMEB A. GLASSBUBN, 0]? LOS ANGELES, CALIFORNIA.

nnroucnnn s ROTARY PENCIL.

Specification of Letters Patent.

Patented Feb. 8, 1921.

Application filed October 21,1918, Serial No. 259,084. Renewed December 22, 1920. Serial No. 432,599.

To all whom it may concern:

Be it known that I, ELMER A. GLASSBURN, a citizen of the United States, residing at Los Angeles, in the county of Los Angeles and State of California, have invented new and useful Improvements in Retouchers Rotary Pencils, of which the following 18 a specification.

My invention relates to a rotary pencil for retouching photographic plates and like uses.

My invention consists in the construction, combination and arrangement of parts here- .inafter described and claimed.

In the accompanying drawings which form a part of this specification,

Figure 1 is a view in perspective illustrating: the method of attaching my retouching pencil to a motor which is driven by a battery connected to it through a switch.

Fig. 2 is an enlarged view of a retouching pencil embodying the principles of my invention partly in section and partly in elevation.

Fig. 3 is an enlarged sectional view on the line 3-3 of Fig. 2, showing the pencil point, gripping fingers and clamping sleeves.

as shown in Fig. 1, the pencil 10 is connected to a motor 11 through a flexible tube or housing 12. the motor being connected to the battery 13 through a switch 14: in the usual way. The pencil proper is contained in a tube casing 15 one end of which has a bearing plug 16 screwed into it. A pencil shaft 17 ex ends longitudinally through the middle of the tube and turns in bearing 16. Inside the bearing the shaft is equipped with a flange 18 and outside the bearing it is provided with a washer 19 held against bearing 16 by a pin 20 inserted in a hole through the outer end of the pencil shaft. A flexible spring shaft 21 extends between the pencil shaft 1.7 and the motor shaft. its end 22 being'fixed in a hole in the pencil shaft. The shaft housing 12 is a flexible tube made of spirally wound wire which telescopes over one end of the pencil casing 15 and has its end 23 bent inwardly and in sorted through a hole in the pencil casing. The point end of the pencil shaft is enlarged and has a socket 24 formed in its outer end. The pencil socket has longitudinal slots 25 cut through its walls which form gripping fingers 26. A clamping sleeve 27 having a tapered end 28 is adapted to telescope over the socket and its inner end 29 is internally threaded to engage with a threaded section 30 on the enlarged part of the pencil shaft. It is evident that as the sleeve is screwed on to the shaft, its tapered end 28 engages the ends of the fingers 26 forcing them against the pencil point 31 so that it is securely gripped. The clamping sleeve turns with the pencil shaft in a bean ing sleeve 32 which is sweated into this end of the pencil casing.

Operation: The pencil point 31 is inserted into the socket 24 and the sleeve 27 is screwed inwardly until the carbon is gripped tightly by the fingers 26. The end of the shaft spring is connected to the pencil shaft and the pencil casing is finall inserted into the shaft housing 12 so that the wire end 23 enters the hole in the pencil casing. The flexible shaft and housing having been connected to the motor, the switch is closed and the motor operates to revolve the shaft and pencil point in the direction indicated by arrow 0;. The pencil is operated in the usual way by the hand gripping the pencil casing 15.

\Vhile I have shown the preferred construction of my rotary pencil as now known to me, it will be understood that various changes in the construction and comljvination of parts may be made by those skilled in the art without departing from the spirit of my invention as claimed.

I claim:

In a retouchers rotary pencil, a tubular casing; a bearing plug screwed into one end of the tubular casing; a pencil shaft ezo tending through through the tubular casing; a flexible tube cr'nnected to the tubular casing; a flexible shaft in the flexible tube connected to the pencil shaft; a flange upon the pencil shaft against the bearing; an enlarged outer end upon the pencil shaft and having a socket in its outer end. said socket having longitudinal slots; a clamping sleeve telescoping over the socket, the enlargement of the shaft being externally screw threaded, and the clamping sleeve being screw seated upon the enlargement, and the socket being adapted to receive and clamp a pencil: and a hearing sleeve in the tubular casing around the socket.

In testimony whereof I have signed my name to this specification.

ELMER A. GLASSBURN.

the bearing plug and 

